Home / 99,640.05-137,502.13-54,317.03

Finding the Fourth Proportional to 99,640.05, 137,502.13 and 54,317.03

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Solution

The fourth proportional to 99,640.05, 137,502.13 and 54,317.03 is: 74,956.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,640.05 : 137,502.13 = 54,317.03 : x
  2. Step 2: Convert to fraction form
    99,640.05/137,502.13 = 54,317.03/x
  3. Step 3: Cross multiply
    99,640.05x = 137,502.13 × 54,317.03
  4. Step 4: Simplify right side
    99,640.05x = 7,468,707,048.69
  5. Step 5: Solve for x
    x = 7,468,707,048.69/99,640.05
  6. Step 6: Final answer
    x = 74,956.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.